Method refreshPreview

src/frontend/datasources/ImportProjectDialog.cpp:321–356

! * show the content of the project in the tree view */

 * show the content of the project in the tree view
 */
void ImportProjectDialog::refreshPreview() {
	const QString& project = m_cbFileName->currentText();
	m_projectParser->setProjectFileName(project);

#ifdef HAVE_LIBORIGIN
	if (m_projectType == ProjectType::Origin) {
		auto* originParser = reinterpret_cast<OriginProjectParser*>(m_projectParser);
		bool hasUnusedObjects = false;
		bool hasMultiLayerGraphs = false;
		originParser->checkContent(hasUnusedObjects, hasMultiLayerGraphs);

		ui.lUnusedObjects->setVisible(hasUnusedObjects);
		ui.chbUnusedObjects->setVisible(hasUnusedObjects);
		originParser->setImportUnusedObjects(hasUnusedObjects && ui.chbUnusedObjects->isChecked());

		ui.lGraphLayer->setVisible(hasMultiLayerGraphs);
		ui.cbGraphLayer->setVisible(hasMultiLayerGraphs);
	}
#endif

	delete ui.tvPreview->model();
	ui.tvPreview->setModel(m_projectParser->model());
	connect(ui.tvPreview->selectionModel(), &QItemSelectionModel::selectionChanged, this, &ImportProjectDialog::selectionChanged);

	// show top-level containers only
	if (ui.tvPreview->model()) {
		QModelIndex root = ui.tvPreview->model()->index(0, 0);
		showTopLevelOnly(root);
	}

	// select the first top-level node and
	// expand the tree to show all available top-level objects and adjust the header sizes
	ui.tvPreview->setCurrentIndex(ui.tvPreview->model()->index(0, 0));
	ui.tvPreview->expandAll();
	ui.tvPreview->header()->resizeSections(QHeaderView::ResizeToContents);
}

/*!
	Hides the non-toplevel items of the model used in the tree view.